Slider lock for slide fasteners



F. LEMMER SLIDER LOCK FOR SLIDE FASTENERS Sept. 23, 1941.

Filed April '7, 1941 2 Sheets-Sheet l Inventor A Horne Sept. 23, 1941.F. LEMMER SLIDER LOCK FOR SLIDE FASTENERS Filed April 7; 1941 V 2Sheets-Sheet 2 Attorney Patented Sept. 23, 1941 UNITED snares PATENTOFFICE 4 Claims.

This invention relates to a slider lock for slide fasteners or"zippers," the general object of the invention being to provide a handlewhich is pivotally connected with the front part of the slider and whichhas a projection thereon for fitting between some of the inter-engagingcoupling or fastening elements of the slide fastener for firmly holdingthe slider in adjusted position.-

Another object of the invention is to provide spring means for holdingthe handle in locking position and also to provide means for preventingthe handle being pressed too far toward the slider which might cause thelocking projection to damage the coupling elements of the zipper.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts to behereinafter fully described, illustrated inthe accompanying drawings andspecifically pointed out in the appended claims. I

In describing the invention in detail, reference will be hadto theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a fragmentary elevational view showing parts of a zipperwith the invention applied thereto.

Figure 2'is an edge view of the slider and the parts associatedtherewith.

Figure 3 is a view similar to Figure 2 but showing the handle in raisedposition so that the I slider can be moved.

has a laterally extending hole 5 therein adjacent one end thereof and.the other end portion is formed with the recesses or notches 6 in itssides, these notches being elongated and extending longitudinally of thebar and above these notches the bar is rounded as shown at 1, see Figure'7.

Thus this portion of the bar is of a cross-sectional shape whichprovides a head part at its outer edge and concavities or recesses inits side portion.

A handle member 8 is preferably formed of a single piece of material cutand bent to provide an elongated handle member having the channelshapedpart 9 at one end thereof, this part being of short length with itsflanges bent inwardly to engage the hole 5, see Figures 2 and 8, so thatthe handle member is pivoted to the bar 4. Inwardly of thechannel-shaped part 9, the handle is formed with an arched part Hi fromthe side edges of which .wings ll extend and these wings are bentupwardly to form the loops l2 and then 'the wings extend downwardlyand'have their free Figure '7 is a section on the line 1-1 of Figure 1.

Figure 8 is a section on the line 8- -8 of Figure 1.

Figure 9 is a view "of the handle and looking toward the underside ofthe handle.

Figure 10 is a section on the line Ill-l0 of Figure l.

The zipper or slide fastener is, as is well known,

ends bent into rounded hooks I3. These wings as formed as shown inFigure l fo'rm spring jaws with the hooks l3 engaging the notches orrecesses Ii in the bar 4 when the handle is in operative position sothat the handle is held'to the bar though by pulling the handleoutwardly the spring parts will release the bar. Beyond the arched partIII the handle is formed with the inwardly extending limbs l4, one ofwhich is provided with a pointed projection IS. The rest of the handleis shaped to form a hand grip as shown at It. Thus part of the limb llwhich is free of the projection l5 forms a stop and the other limb I4has its free end forming a stop, these stops engaging the limb 3 of theslider for limiting movement of the handle toward the slider and thisprevents the projection l5 from entering between the elements I atoogreat an extent. Thus it will be seen that when the handle 8 is inraised position as shown in Figure 3 composed of the coupling elements Iand the slider 2 which as it passes over the elements I couples themtogether so as to close the opening in the garment or other object towhich the zipper or slide fastener is connected- The slider 2 is ofsubstantially conventional form with the exception that its front limb 3is made shorter than its rear limb, see Figure 2, and the front face ofsaid front limb has an elongated bar-like member I connected therewith.This member the slider can be moved to open or close the open ing to theedges of which the elements vI are connected. The slider can be moved bygripping the bar 4 or it may be moved by the handle 8. Then when theslider has been moved to the desired extent in a closing movement of theopening the handle 8 is swung from the position shown in Figure 3 tothat shown in Figure 2. This will cause the projection l5 to enterbetween some of the elements i though this penetration is limited by thestops formed by the limbs 14 engagingthe slider. Also, the spring jawswill engage the recesses 6 and thus firmly hold the handle in closedsome of the elements I and thus the slider will befirmly locked inadjusted position and it cannot be moved until the handle 8 is forciblymoved from the position shown in Figure 2 to that shown in Figure 3. IByshortening the front limb 3 it is not necesthat the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claims.

Having described the invention, what is claimed as new is: y

1. In a slide fastener, a sliderand coupling elements, a bar on thefront face of the slider having recesses in its side edges, a handlepivotally connected with the bar, a projection'on the handle forengaging parts of the coupling elements to lock the slider in adjustedposition, and

spring jaws connected with the handle for engag ing,the recesses forholding the handle in position with the projection engaging the couplingelements.

2. In a slide fastener including coupling elements and a slider, a'baron the front face of the slider having recesses in its side edges, ahandle pivotedto the bar, spring jaws connected with the handle forengaging the recesses for holding the handle in closed position, aprojection on the handle for engaging portions of the coupling elementsto lock the slider in adjusted position, the

. front part of the slider to which the bar is connected being shorterthan the rear portion and the projection passing the end of the shortpart when in operative position.

3. In a slide fastener including, coupling elements and a slider, a baron the front face of the slider having recesses in its side edges, ahandle pivoted to the bar, spring jaws connected with the handle forengaging the recesses for holding the handle in closed position, aprojection on the handle for engaging portions of the coupling elementsto lock the slider in adjusted position, the front part of the slider towhich the bar is connected being shorter than the rear portion and theprojection passing the end of the short part when 'in operativeposition, and a stop formed on the handle engaging the front of theslider for limiting inward movement-of the handle.

4. In combination with a slide fastener including coupling elements anda slider, a bar formed on the front of the slider and having a hole inone end and recesses in the sides thereof, a handle having achannel-shaped part at one end thereof, inwardly extending projectionson the flanges for engaging the hole to pivotally connect the handle tothe bar, hook-shaped wings on an intermediate part of the handle withthe outer limb of each loop extending beyond the other limb andterminating in a rounded gripping part, said gripping parts gripping therecessed part of the'bar for holding the handle in closed position, apair of limbs extending inwardly from the handle and spaced from thewings, said last-mentioned limbs having flat parts for engaging-thefront face of the slider for limiting inward movement of the handle, aprojection'on one of the last-mentioned limbs for engaging parts of thecoupling elements to prevent movement of the slider and the front limbof the slider being shorter than the rear limb for permitting passage ofthe pro-.

FREDERICK LEMMER.

